Structure of Atom
130 JEE Mains Chemistry previous year questions (PYQs) from 78 papers, 2021 to 2026, with answers and worked solutions.
About this chapter
- Most-asked subtopics: Bohr Model: Radius, Energy and Velocity (25), Orbital Energies and Electronic Configuration (22), Photons, Planck's Quantum and the Photoelectric Effect (19).
- Updated 6 August 2026.
#1Photons, Planck's Quantum and the Photoelectric Effect
#2Photons, Planck's Quantum and the Photoelectric Effect
#3Photons, Planck's Quantum and the Photoelectric Effect
#4Photons, Planck's Quantum and the Photoelectric Effect
#5Photons, Planck's Quantum and the Photoelectric Effect
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#6Photons, Planck's Quantum and the Photoelectric Effect
#7Photons, Planck's Quantum and the Photoelectric Effect
#8Photons, Planck's Quantum and the Photoelectric Effect
#9Photons, Planck's Quantum and the Photoelectric Effect
#10Photons, Planck's Quantum and the Photoelectric Effect
#11Photons, Planck's Quantum and the Photoelectric Effect
#12Photons, Planck's Quantum and the Photoelectric Effect
#13Photons, Planck's Quantum and the Photoelectric Effect
#14Photons, Planck's Quantum and the Photoelectric Effect
#15Photons, Planck's Quantum and the Photoelectric Effect
#16Photons, Planck's Quantum and the Photoelectric Effect
#17Photons, Planck's Quantum and the Photoelectric Effect
#18Photons, Planck's Quantum and the Photoelectric Effect
#19Photons, Planck's Quantum and the Photoelectric Effect
#20Bohr Model: Radius, Energy and Velocity
#21Bohr Model: Radius, Energy and Velocity
#22Bohr Model: Radius, Energy and Velocity
#23Bohr Model: Radius, Energy and Velocity
#24Bohr Model: Radius, Energy and Velocity
#25Bohr Model: Radius, Energy and Velocity
#26Bohr Model: Radius, Energy and Velocity
#27Bohr Model: Radius, Energy and Velocity
#28Bohr Model: Radius, Energy and Velocity
#29Bohr Model: Radius, Energy and Velocity
#30Bohr Model: Radius, Energy and Velocity
#31Bohr Model: Radius, Energy and Velocity
#32Bohr Model: Radius, Energy and Velocity
#33Bohr Model: Radius, Energy and Velocity
#34Bohr Model: Radius, Energy and Velocity
#35Bohr Model: Radius, Energy and Velocity
#36Bohr Model: Radius, Energy and Velocity
#37Bohr Model: Radius, Energy and Velocity
#38Bohr Model: Radius, Energy and Velocity
#39Bohr Model: Radius, Energy and Velocity
#40Bohr Model: Radius, Energy and Velocity
#41Bohr Model: Radius, Energy and Velocity
#42Bohr Model: Radius, Energy and Velocity
#43Bohr Model: Radius, Energy and Velocity
#44Bohr Model: Radius, Energy and Velocity
#45Hydrogen Spectrum and Spectral Series
#46Hydrogen Spectrum and Spectral Series
#47Hydrogen Spectrum and Spectral Series
#48Hydrogen Spectrum and Spectral Series
#49Hydrogen Spectrum and Spectral Series
#50Hydrogen Spectrum and Spectral Series
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- Aldehydes, Ketones and Carboxylic Acids165
- Amines160
- Biomolecules135
- Chemical Bonding and Molecular Structure176
- Chemical Kinetics126
- Chemical Thermodynamics128
- Chemistry in Everyday Life49
- Classification of Elements and Periodicity117
- Coordination Compounds215
- Electrochemistry125
- Environmental Chemistry65
- Equilibrium131
- General Principles and Processes of Isolation of Elements74
- Haloalkanes and Haloarenes92
- Hydrocarbons165
- Hydrogen64
- Organic Chemistry - Some Basic Principles and Techniques243
- Organic Reaction Mechanisms48
- Polymers46
- Solid State33
- Solutions110
- Some Basic Concepts of Chemistry205
- Surface Chemistry64
- The d- and f-Block Elements214
- The p-Block Elements185
- The s-Block Elements88